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| A method of controlling the quality of heavy rainfall data of automatic meteorology stations and its practice |
| Sheng Zhijun1,Ma Zhongyuan2,Xu Aihua1 |
1.Jiangxi Meteorological Observatory,Nanchang 330046;
2.Jiangxi Institute of Meteorological Science,Nanchang 330046 |
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Abstract Using longitude-latitude grid data of weather radar echo mosaic and precipitation data of automatic meteorology stations,the segmentation calculation and mean value wave filtering algorithms are introduced to control the quality of suspicious data of heavy rainfall(≥20mm/h) that automatic meteorology stations record.The results show that it is very effective that heavy rainfall data of automatic stations is confirmed by longitude-latitude grid data(1100×1100km)of radar echo mosaic. The maximum refresh time of rainfall products can be raised by segmentation calculation on one hour precipitation. The granular echo interference can be reduced or eliminated by mean value wave filtering algorithms based on radar echo grid data.The method has good effect on eliminating suspicious precipitation of automatic stations by testing cases.
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Received: 23 October 2015
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| [1] |
任芝花,熊安元.地面自动站观测资料三级质量控制业务系统的研制[J].气象,2007,33(1):19-24.
|
| [2] |
任芝花,赵平,张强,等.适用于全国自动站小时降水资料的质量控制方法[J].气象,2010,36(7):123-132.
|
| [3] |
蒙炤臻,林奕桐,李仕强,等.自动站温度、雨量数据的质量控制方法和应用研究[J].气象研究与应用,2014,35(1):99-103.
|
| [4] |
李强,何遂,吉莉,等.基于GIS的小区域气象灾害精细化预警系统[J].气象科技,2014,42(1):89-93.
|
| [5] |
岳艳霞,陈静,郭志斌.区域自动站雨量资料质量控制方法及应用[J].气象科技,2009,32(4):89-93.
|
| [6] |
蔡锦辉,朱江.自动站降雨数据质量控制的GIS分析方法[J].广东气象,2014,36(3):78-80.
|
| [7] |
孙即祥.数字图像处理[M].石家庄:河北教育出版社,1993.
|
| [8] |
LEE Y H,KASSAM S A.Generalized median filtering and related nonlinear filtering techniques[J].IEEE Transactions on Acoust,Speech,Signal Processing,1985,33(3):672-680.
|
| [9] |
张宇,王希勤,彭应宁.自适应中心加权的改进均值滤波算法[J].清华大学学报(自然科学版),1999,39(9):76-78.
|
| [10] |
张恒,雷志辉,丁晓华.一种改进的中值滤波算法[J].中国图象图形学报,2004,9(4):408-411.
|
|
|
|
2016, Vol. 33 
